CVE-2021-21639

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    CVE-2021-21639

    Published: 7 Apr 2021Last Modified: 9 Jul 2026

    Summary:

    Details: Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not validate the type of object created after loading the data submitted to the `config.xml` REST API endpoint of a node, allowing attackers with Computer/Configure permission to replace a node with one of a different type.

    References: http://www.openwall.com/lists/oss-security/2021/04/07/2, https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-1721

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    jenkins-2.286

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-21639 | CVE-DB